Flora of North America species comparison

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Symphyotrichum spathulatum var. spathulatum

Symphyotrichum spathulatum var. yosemitanum
Photo is of parent taxon

western aster, western mountain aster
Photo is of parent taxon

western bog aster
Habit Plants 20–50(–60) cm. Plants 20–60 cm.
Leaves

narrowly elliptic to oblanceolate.

linear.
Heads

3–10(–20).

3–25.
2n

= 16, 32, 48, 64.

Symphyotrichum spathulatum var. spathulatum

Symphyotrichum spathulatum var. yosemitanum
Phenology Flowering Jul–Aug. Flowering Jul–Aug.
Habitat Montane meadows, open aspen and coniferous forests Damp meadows in oak woodlands and coniferous forests
Elevation (100–)1200–2900 m ((300–)3900–9500 ft) 1200–2200 m (3900–7200 ft)
Distribution
from FNA
CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC; NT; Mexico (Baja California)
[BONAP county map]
from FNA
CA; OR
[BONAP county map]
Discussion

Variety yosemitanum occurs from southern Oregon to the Sierra Nevada of California.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 20, p. 535. FNA vol. 20, p. 535.
Parent taxa Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Occidentales > Symphyotrichum spathulatum Asteraceae > tribe Astereae > Symphyotrichum > subg. Symphyotrichum > sect. Occidentales > Symphyotrichum spathulatum
Sibling taxa
S. spathulatum var. intermedium, S. spathulatum var. yosemitanum
S. spathulatum var. intermedium, S. spathulatum var. spathulatum
Synonyms Aster occidentalis Aster ascendens var. yosemitanus, Aster occidentalis var. yosemitanus, Aster paludicola
Name authority unknown (A. Gray) G. L. Nesom: Phytologia 77: 292. (1995)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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